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Altered electrochemical properties of iron oxide nanoparticles by carbon enhance molecular biocompatibility through discrepant atomic interaction

S.K. Verma, A. Thirumurugan, P.K. Panda, P. Patel et al. • Materials Today Bio (2021)

Recent advancement in nanotechnology seeks exploration of new techniques for improvement in the molecular, chemical, and biological properties of nanoparticles. In this study, carbon modification of octahedral-shaped magnetic nanoparticles ...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.mtbio.2021.100131

A Catalog of Filaments in the Central Molecular Zone

Richard G. Arendt, F. Yusef-Zadeh, I. Heywood • The Astrophysical Journal Supplement Series (2025)

We present a catalog of 1.28 GHz radio filaments observed by MeerKAT over the innermost 200 pc of the Galaxy (roughly ±1 $\mathop{.}\limits^{\unicode{x000b0}}$ 5), which includes the central molecular zone. The catalog is generated by repur...

DOAJ Open Access (DOAJ) DOI: 10.3847/1538-4365/ae1296

Testing the Physical Parameter Constraining Power of HCN and HNC with Neural Networks

Erica Behrens, Jeffrey G. Mangum, Mathilde Bouvier, Cosima Eibensteiner et al. • The Astrophysical Journal (2026)

We quantify the utility of HCN and HNC to characterize gas conditions in the nearby starburst galaxy NGC 253. We use measurements from the Atacama Large Millimeter/Submillimeter Array (ALMA) Large Program ALCHEMI: the ALMA Comprehensive Hig...

DOAJ Open Access (DOAJ) DOI: 10.3847/1538-4357/ae3567

A Gaussian Process Framework for Testing General Relativity with Gravitational Waves

Lachlan Passenger, Shun Yin Cheung, Nir Guttman, Nikhil Kannachel et al. • The Astrophysical Journal (2025)

Gravitational-wave astronomy provides a promising avenue for the discovery of new physics beyond general relativity as it probes extreme curvature and ultrarelativistic dynamics. However, in the absence of a compelling alternative to genera...

DOAJ Open Access (DOAJ) DOI: 10.3847/1538-4357/ae13b0

The Be star o Cas is indeed the primary of a triple system

Harmanec P., Yang S., Šlechta M., Grundstrom E. D. et al. • Astronomy & Astrophysics (2026)

Analysis of radial velocities of two narrow absorption components in the Mg II 4481 Å line demonstrated that the secondary of the Be star o Cas is indeed a close binary system composed of two B7 stars orbiting each other with a period of ...

DOAJ Open Access (DOAJ) DOI: 10.1051/0004-6361/202659678

27 yr of Spaceborne IR Astronomy: An ISO, Spitzer, WISE, and NEOWISE Survey for Large-amplitude Variability in Young Stellar Objects

Chinmay S. Kulkarni, Thomas Behling, Elisabeth E. Banks, Jason Jones et al. • The Astrophysical Journal (2026)

Infrared observations can probe photometric variability across the full evolutionary range of young stellar objects (YSOs), from deeply embedded protostars to pre-main-sequence stars with dusty disks. We present 3–8 μ m light curves extendi...

DOAJ Open Access (DOAJ) DOI: 10.3847/1538-4357/ae3156

Lectures on Astrophysics

Steven Weinberg • Cambridge University Press eBooks (2019)

Lectures on Astrophysics provides an account of classic and contemporary aspects of astrophysics, with an emphasis on analytic calculations and physical understanding. It introduces fundamental topics in astrophysics, including the properti...

OPENALEX Open Access DOI: https://doi.org/10.1017/9781108227445

Atomic Astrophysics and Spectroscopy

Anil K. Pradhan, Sultana N. Nahar • Cambridge University Press eBooks (2011)

Spectroscopy enables the precise study of astronomical objects and phenomena. Bridging the gap between physics and astronomy, this is the first integrated graduate-level textbook on atomic astrophysics. It covers the basics of atomic physic...

OPENALEX DOI: https://doi.org/10.1017/cbo9780511975349

SN 2023ixf in M101: Physical Parameters from Bolometric Light Curve Modeling

József Vinkó, Zsófia Réka Bodola, Ákos Gődény, Szelina Fruzsina Csák et al. • The Astrophysical Journal (2025)

We present new photometric observations of the core-collapse supernova SN 2023ixf occurred in M101, taken with the RC 80 and BRC80 robotic telescopes in Hungary. The initial nickel mass from the late-phase bolometric light curve extending u...

DOAJ Open Access (DOAJ) DOI: 10.3847/1538-4357/ae0614

Excitation thresholds of field-aligned irregularities and associated ionospheric hysteresis at very high latitudes observed using SPEAR-induced HF radar backscatter

D. M. Wright, R. S. Dhillon, T. K. Yeoman, T. R. Robinson et al. • Annales Geophysicae (2009)

On 10 October 2006 the SPEAR high power radar facility was operated in a power-stepping mode where both CUTLASS radars were detecting backscatter from the SPEAR-induced field-aligned irregularities (FAIs). The effective radiated power of...

DOAJ Open Access (DOAJ) DOI: 10.5194/angeo-27-2623-2009

Turbulence properties and kinetic signatures of electrons in Kelvin-Helmholtz waves during a geomagnetic storm

Harsha Gurram, Harsha Gurram, Jason R. Shuster, Li-Jen Chen et al. • Frontiers in Astronomy and Space Sciences (2026)

The Kelvin–Helmholtz instability (KHI), in its nonlinear phase, plays a significant role in transporting solar-wind plasma into Earth’s magnetosphere. This study investigates the turbulence properties and reconnection signatures observed at...

DOAJ Open Access (DOAJ) DOI: 10.3389/fspas.2026.1788081

The surface temperatures of Earth: steps towards integrated understanding of variability and change

C. J. Merchant, S. Matthiesen, N. A. Rayner, J. J. Remedios et al. • Geoscientific Instrumentation, Methods and Data Systems (2013)

Surface temperature is a key aspect of weather and climate, but the term may refer to different quantities that play interconnected roles and are observed by different means. In a community-based activity in June 2012, the EarthTemp Network...

DOAJ Open Access (DOAJ) DOI: 10.5194/gi-2-305-2013

Additive roles of antiferromagnetically coupled elements in the magnetic proximity effect in the GdFeCo/Pt system

Jung Yun Kee, Kook Tae Kim, In Hak Lee, Ilwan Seo et al. • Scientific Reports (2024)

Abstract Interfacial magnetic interactions between different elements are the origin of various spin-transport phenomena in multi-elemental magnetic systems. We investigate the coupling between the magnetic moments of the rare-earth, transi...

DOAJ Open Access (DOAJ) DOI: 10.1038/s41598-024-60076-9

All-dielectric metaoptics for the compact generation of double-ring perfect vector beams

Vogliardi Andrea, Ruffato Gianluca, Bonaldo Daniele, Dal Zilio Simone et al. • Nanophotonics (2023)

Perfect vortices, whose ring profile is independent of the topological charge, play a key role in telecommunications and particle micro-manipulation. In this work, we report the compact generation of a new kind of double-ring perfect vortic...

DOAJ Open Access (DOAJ) DOI: 10.1515/nanoph-2023-0555

Enhanced Absorption with Graphene-Coated Silicon Carbide Nanowires for Mid-Infrared Nanophotonics

Patrick Rufangura, Iryna Khodasevych, Arti Agrawal, Matteo Bosi et al. • Nanomaterials (2021)

The mid-infrared (MIR) is an exciting spectral range that also hosts useful molecular vibrational fingerprints. There is a growing interest in nanophotonics operating in this spectral range, and recent advances in plasmonic research are aim...

DOAJ Open Access (DOAJ) DOI: 10.3390/nano11092339

So FAIR, so good

Rinaldi Lorenzo, Bonacorsi Daniele, Bozzi Concezio, Dal Pra Stefano et al. • EPJ Web of Conferences (2025)

Large international collaborations in the field of Nuclear and Subnuclear Physics have been leading the implementation of FAIR principles for managing research data. These principles are essential when dealing with large volumes of data ove...

DOAJ Open Access (DOAJ) DOI: 10.1051/epjconf/202533701140

Pt and CoB trilayer Josephson $$\pi $$ π junctions with perpendicular magnetic anisotropy

N. Satchell, T. Mitchell, P. M. Shepley, E. Darwin et al. • Scientific Reports (2021)

Abstract We report on the electrical transport properties of Nb based Josephson junctions with Pt/Co $$_{68}$$ 68 B $$_{32}$$ 32 /Pt ferromagnetic barriers. The barriers exhibit perpendicular magnetic anisotropy, which has the main advantag...

DOAJ Open Access (DOAJ) DOI: 10.1038/s41598-021-90432-y